---
res:
bibo_abstract:
- The calculation of Feynman diagrams in terms of a Taylor expansion w.r.t. small
momenta squared is a very promising method and may become particularly important
for the higher loop diagrams. If the lowest thresholds are very low, however,
then the Taylor series expansion is either difficult to apply or extremely many
Taylor coefficients might be needed to achieve convergence. In the case of one
variable, q(2), the relevant normalization is r = q(2)/q(th)(2) (q(th)(2) = threshold
value of q(2)) and we demonstrate that with 30 Taylor coefficients up to r = 100
a precision of 3 to 4 decimals can be achieved. For the case of a low threshold
we compare our results with the zero threshold case obtained by first applying
a large mass expansion. bs expected the deviation is small which serves as an
excellent test for both the methods.@eng
bibo_authorlist:
- autoren_ansetzung:
- Fleischer, Jochem
- Fleischer
- Jochem Fleischer
- Fleischer, J
- Fleischer, J.
- J Fleischer
- J. Fleischer
foaf_Person:
foaf_givenName: Jochem
foaf_name: Fleischer, Jochem
foaf_surname: Fleischer
foaf_workInfoHomepage: http://www.librecat.org/personId=40323
- autoren_ansetzung:
- Tarasov, OV
- Tarasov
- OV Tarasov
- Tarasov, O
- Tarasov, O.
- O Tarasov
- O. Tarasov
foaf_Person:
foaf_givenName: OV
foaf_name: Tarasov, OV
foaf_surname: Tarasov
dct_date: 1996^xs_gYear
dct_identifier:
- UT:A1996WB01500039
dct_isPartOf:
- http://id.crossref.org/issn/0550-3213
dct_language: eng
dct_publisher: ELSEVIER SCIENCE BV@
dct_title: Calculation of Feynman diagrams with low thresholds from their small
momentum expansion.@
...